Loom-shuttle



S. R. LIBE -Y. 1.00M SHUTTLE. APPLICATION FILED OCT. 15. I919.

Patented July 20, 1920.

NTUH 521m ATIZUHNEY:

PATENT OFFICE.

SAT IL It. LIBERTY, OF PAWTUCKET, RHODE ISLAND.

LOOM-SHUTTLE.

Specification of Letters Patent.

Patented July 20, 1920.

Application filed October 15, 1319. Serial No. 330,890.

To all whom it may concern:

Be it known that I, Satin R. LIBERTY, a citizen of the United States, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Loom-Shuttles, of which the following is a specification.

The object of my invention is to improve the construction of loom shuttles, reference being had to my United States Patent No.

1,296,825, granted to me March 11, 1919.

A further object of my invention isto eliminate the hereto-fore used pivoted movable release arms which operate to open the bobbin clamping arms, thereby reducing the number of parts.

Another object of my invention is to reconstruct the spindle spring so that the means for releasing or opening the bobbin clamping member is formed integral with the spindle spring.

Another object of my invention is to provide a loom shuttle with a spindle stop and spindle spring wearing member, thereby limiting the outward movement of the spindle and eliminating wear on the spindle spring.

My invention consists in the peculiar and novel construction of a loom shuttle, said loom shuttle having details of construction, as will be more fully set forth hereinafter and claimed.

Figure 1 is a top view of the spindle end of a loom shuttle provided with my improvements.

Fig. 2 is a longitudinal sectional view taken on line 2.2 of Fig. 1.

Fig. 3 is a transverse sectional view taken on 1line 3.3 of Fig. 1, with the spindle down, anc

Fig. 4 is a transverse sectional view similar to Fig. 3 with the spindle raised.

In the drawing 5 indicates the spindle end of a loom shuttle having-the usual bobbin cavity 6.. A spindle 7 is pivotally secured to the shuttle by a pin 8 in the usual way. The spindle 7 has a heel 9 which in addition to the usual construction has a pin 10 which extends out from the back of the heel on a line with the spindle, as shown in Fig. 2. A bobbin gripping and releasing member 11 of tempered sheet steel, is formed approximately V shaped and straddles the spindle heel and adjacent portion of the spindle. It has a hole 12 in its closed end for the pin 10, spring side arms 14.14 and oppositely disposed holes 13.13 in the side arms 14.14 for the spindle pivot pin 8, as shown in dotted lines in Fig. 2. Each of the arms 14.14 has a slightly depressed upper edge 15 and the ends of the arms are bent toward each other forming L shaped gripping ends 16.16, adapted to enter oppositely disposed slots in a bobbin, indicated in broken lines in Fig. 1. The pins-8 and 10 secure the bobbin gripping member 11 to the spindle heel so that it has a positive movement with the spindle, when the spindle is raised. A spindle spring 17 is secured to the shuttle by a screw 18 in the usual way. This spindle spring 17 has on its end, in addition to its usual construction, a bent up U shaped member 19 which extends upward between the arms 14.14 of the bobbin gripping member 11 and straddles the spindle 7 adjacent the heel of the spindle. Each arm 20.20 of the U shaped member '19 terminates into a comparatively rigid outwardly flaring inclined cam face 21, in a position to engage with the upper edge 15 on an arm 14 as shown in Fig. 3, when the spindle is in the down or in position. A spindle stop and spindle spring wearing member 22 is placed intermediate the spin dle spring 17 and the heel 9 of the spindle, it is held in place by the screw 18, through a screw-hole 23, as shown in Fig. 2 and has a bent up stop end 24. By this construction the wear of the spindle heel 9 comes on the stop member 22 which when worn, can be easilyreplaced at a slight expense.

When a bobbin is to be removed or replaced the spindle 7 is raised as shown in broken lines in Fig. 2. The comparatively rigid cam faces 21.21 engaging with the upper edges 15.15 of the spring side arms 14.14 forces the arms apart, against the spring tension of the arms, thereby releasing the bobbin gripping ends 16.16 from the bobbin. A new bobbin may now be placed on and secured to the spindle by depressing the spindle into the bobbin cavity 6 when the'action of the cam faces 21.21 will be reversed and the gripping ends 16.16 through the spring action of the arms 14.14 will grip the bobbin and lock the bobbin to the spindle.

By the use of my improved construction the force, inopening the bobbin clamping arms, is now applied to the edge of the arms, in place of the center of the arms, as heretofore, thereby preventing breaking of the arms at the spindle pin holes in the arms, five parts of a bobbin clamping releasing member, as heretofore used are eliminated, the bobbin clamping member is more positively secured to the spindle and its operation improved and wear of the spindle heel 0n the spindle spring is eliminated. 1

Having thus described my invention I claim as newz- V 1'. In loom shuttle, a; spindle having a 'heel' pivotally secured in the shuttle, a bobbin clamping member having spring bobbin clamping arms straddling the spindle heel and adjacent portion of the spindle, a spin I dle spring having an end formed into ea'm faces in a position to engage with the spring arms of th'e'bobbin clamping member, means for securing: the bobbin clamping member to the heel ofthe spindle an'd' m'ean'sfor securi'n' i the shuttle spring to the shuttle.

2. n a loom shuttle, a spindle having a heel pivota'l'ly secured in the shuttle,- a bobbin clamping member having spring bobbin clamping arm's straddling the spindle heel and adjacent ortion of the spindle, a pin on the spindle heel extending through a hole in the bobbin clamping member, a spindle spring having a bent'up U shaped end, the

arms of the U shaped end terminating into cam faces in a position to engage the edges of the arms of the bobbin clamping memher, a spindle stop and spindle spring, Wearing member intermediate the heel of the spindle and the spindle spring and having 3.- A spindle spring for a l'oonr shuttle having a bent up .U shaped end, the arms of the U Slit-1 19861IlCl bel'ml'Ilttlngi 1n cam surlia ces which engage:with and release the spring armsof the bobbin el ampingmember from the bobbin, as described.

In testimony whereof I have signed my name to this speci-fieation.

SAUL n. LIBERTY. 

